BG-57: you can climb over [large monsters like Worker 8 and Hydras] to move large vertical distances. This is especially handy in Nelveska Temple to get those all important Javelin (II) and Escutcheon (II).
Especially since you cant use both "Ignore Hieght"/"Teleport" and "Move-Find-Item" at the same time.

meaning you need to be able to jump that high with just your job and Gear, not using a movment Ability other than "Move-Find-Item".